Merge PDF

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Drop PDF files here

Drag & drop your PDF files, or click to browse

Merging your PDFs…

✅

Merge complete!

About this PDF Merger

This tool lets you combine multiple PDF files into a single document in seconds. Everything runs entirely in your browser — your files are never uploaded to any server, which means your documents stay completely private.

How to merge PDF files

Step 1: Click "Choose PDF Files" or drag and drop your PDFs into the upload area
Step 2: Drag the files up or down to set the order you want them merged in
Step 3: Click "Merge PDFs" and your combined file will be ready to download instantly

Features

Unlimited files: Merge as many PDFs as you need in one go
Drag to reorder: Simply drag files up or down to change the merge order
100% private: Files are processed locally — nothing is ever sent to a server
No file size limit: Works with large PDFs too (limited only by your browser's memory)
No watermarks: The merged PDF is completely clean with no added text or branding

When would you merge PDFs?

Combining multiple scanned documents into one file
Merging chapters of a report or book into a single PDF
Joining invoices, receipts, or contracts into one document
Combining assignment pages before submitting to a school or university portal

Privacy

Your PDF files never leave your device. All processing happens inside your browser using JavaScript. No file is uploaded, stored, or transmitted anywhere.

Frequently Asked Questions

How do I merge PDF files online for free? +

Upload your PDF files to this tool, arrange them in the order you want, then click Merge. The tool combines them into a single PDF that you can download immediately. No login, no subscription, and no file size limits on most modern browsers.

Is it safe to merge PDF files online? +

This PDF merger runs entirely in your browser. Your files are never uploaded to any server and never leave your device. All processing happens locally using JavaScript, so your documents remain completely private and secure.

What is the maximum number of PDFs I can merge? +

You can merge as many PDFs as your browser's memory allows. For most users, merging 10-20 PDFs works seamlessly. Very large PDFs or many files may be slow depending on your device's available RAM.

Can I rearrange the order of pages when merging PDFs? +

Yes. After uploading your PDF files, you can drag and drop them to reorder before merging. The final PDF will combine the files in the order you set.

Does merging PDFs reduce their quality? +

No. This tool combines PDFs at the binary level without re-encoding the content. Images, text, and formatting are preserved exactly as they were in the original files. The merged output is identical in quality to the inputs.